Hi,
some of you are looking for an easy way to get involved with coreboot v3. Maybe the easiest task would be a refactoring of northbridge/amd/geodelx/raminit.c. That code has lots of duplications all over the map due to the fact the code was originally written for ROMCC efficiency. You may save more than 30% code size and probably quite a bit of execution time by killing duplicates and moving the "invalid SPD" checks to some generic function. There's simply no need to check and calculate the same stuff over and over again.
Regards, Carl-Daniel